somewhat wip sniffing

src/main.rs

@@ -1,6 +1,6 @@
 mod config;
 mod geoparsers;
-mod sniffing;
+pub mod sniffing;
 mod startup;
 
 use startup::init;

src/sniffing/headers.rs

@@ -3,6 +3,7 @@ use tun::Error;
 // Here we will recieve bytes and try to get their destanation & apply Rules for them.
 use crate::config::Config;
 
+#[derive(Debug)]
 enum Protocol {
     TCP,
     UDP
@@ -10,7 +11,8 @@ enum Protocol {
 type Ipv4 = [u8; 4];
 type Ipv6 = [u8; 16];
 type Port = u16;
-enum PacketInfo {
+#[derive(Debug)]
+pub enum PacketInfo {
     // <https://www.geeksforgeeks.org/computer-networks/what-is-ipv4/>
     V4 {
         src_ip: Ipv4,
@@ -29,37 +31,38 @@ enum PacketInfo {
     }
 }
 pub fn sniff_raw_packets(packet: &[u8]) -> Result<PacketInfo, Box<dyn std::error::Error + Send + Sync + 'static>> {
+    println!("something");
     let ver = packet[0] >> 4;
+    dbg!(ver);
     match ver {
         4 => {
-            PacketInfo::V4{
-                src_ip: packet[12..16],
+            Ok(PacketInfo::V4{
+                src_ip: packet[12..16].try_into()?,
                 src_port: u16::from_be_bytes([packet[20], packet[21]]),
-                dst_ip: packet[16..20],
+                dst_ip: packet[16..20].try_into()?,
                 dst_port: u16::from_be_bytes([packet[22], packet[23]]),
                 protocol: match packet[9] {
                     6 => Protocol::TCP,
                     4 => Protocol::UDP,
-                    _ => return Err(format!("unsuppiorted protocol: {p}").into())
-                }
+                    p => return Err(format!("unsuppiorted protocol: {p}").into())
                 }
+            })
         },
         6 => {
-            PacketInfo::V6{
-                src_ip: packet[8..24],
+            Ok(PacketInfo::V6{
+                src_ip: packet[8..24].try_into()?,
                 src_port: u16::from_be_bytes([packet[40], packet[41]]),
-                dst_ip: packet[24..40],
+                dst_ip: packet[24..40].try_into()?,
                 dst_port: u16::from_be_bytes([packet[42], packet[43]]),
                 protocol: match packet[6] {
                     6 => Protocol::TCP,
                     4 => Protocol::UDP,
-                    _ => return Err(format!("unsuppiorted protocol: {p}").into())
-                }
+                    p => return Err(format!("unsuppiorted protocol: {p}").into())
                 }
+            })
         },
         ver => {
-            panic!("unexpected packet ver: {ver}");
-            Error
+            Err(format!("unsuppiorted ver: {ver}").into())
         }
     }
 }

src/startup.rs

@@ -1,6 +1,6 @@
 // Here we iniitialize systems crucial for nsc
 use std::io::Read;
-use sniffing::headers::sniff_raw_packets;
+use crate::sniffing::headers::sniff_raw_packets;
 
 pub fn init() -> Result<(), Box<dyn std::error::Error + Send + Sync + 'static>> {
     let mut config = tun::Configuration::default();
@@ -21,8 +21,9 @@ pub fn init() -> Result<(), Box<dyn std::error::Error + Send + Sync + 'static>>
 
     loop {
         let amount = dev.read(&mut buf)?;
-        sniff_raw_packets(&buf[0..amount]);
-        dbg!("{:?}", &buf[0..amount]);
-
+        // dbg!(sniff_raw_packets(&buf[0..amount])?);
+        let govno = sniff_raw_packets(&buf[0..amount])?;
+        println!("{govno:?}")
+        // dbg!("{:?}", &buf[0..amount]);
     }
 }